Geochemistry of the Darwin Glacier region granitoids, southern Victoria Land

• Published in: Antarctic Science
• Main Authors: SIMPSON, A.L., COOPER, A.F.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 2002
• Subjects: Antarc*; Antarctic Science; Antarctica; Darwin Glacier; Victoria Land
• Online Access: http://dx.doi.org/10.1017/s0954102002000226; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102002000226

The Darwin Glacier region is located between the Carlyon and Darwin glaciers in southern Victoria Land, Antarctica (Fig. 1). Previous work on Ross Orogeny granitoids of the Darwin Glacier region is mutually conflicting. Haskell et al. (1965) mapped three plutons, the Carlyon Granodiorite, Mount Rich Granite and Hope Granite, Felder & Faure (1990) did not recognise the Hope Granite, and Encarnación & Grunow (1996) interpreted the entire area as underlain by a single intrusion, the Brown Hills pluton. Fieldwork during the 2000 field season and subsequent geochemical and geochronological analysis described here indicates the presence of three distinctive granitic suites, emplaced during Cambrian times. These include the Foggy Dog Granite (FDG) suite, the Darwin calcic suite and the Cooper Granodiorite.